Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:34 2012 Optimize a model with 1 rows, 173 columns and 173 nonzeros Model has 139 quadratic objective terms Presolve removed 0 rows and 39 columns Presolve time: 0.00s Presolved: 140 rows, 273 columns, 551 nonzeros Variable types: 0 continuous, 273 integer (272 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 171 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 28 38.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 26.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 18.00000 0.00000 100% - 0s 0 0 0.00000 0 26 18.00000 0.00000 100% - 0s 0 0 0.00000 0 14 18.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 10.00000 0.00000 100% - 0s 0 0 0.00000 0 11 10.00000 0.00000 100% - 0s 0 0 0.00000 0 18 10.00000 0.00000 100% - 0s 0 0 0.00000 0 16 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 10 9.00000 0.00000 100% - 0s * 278 131 32 8.0000000 0.00000 100% 3.7 0s H 325 79 4.0000000 0.00000 100% 4.7 0s H 433 63 3.0000000 0.00000 100% 10.0 0s Cutting planes: Cover: 239 MIR: 2 Zero half: 1 Explored 497 nodes (9777 simplex iterations) in 0.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%